<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="myPlugins.js"></script>
</head>
<body>
<input type="text" name="username" id="username" value="15957899036">
<input type="password" name="password" id="password" value="110120">
<input type="button"  id="loginbtn" value="login">
</body>
</html>